Due to We-Blocker's incompatibility with all versions of Windows since Vista, TechMission is no longer offering it as a download. More recent versions of Windows offer their own filtering via Windows Parental Controls. If you are more technically savvy, you can use a service like OpenDNS.
Finally, K9 Web Protection is a popular free Internet filter.

For adults, we offer a special promotional deal on Covenant Eyes Internet accountability software, which logs the websites that you visit and sends them to an accountability partner.